Mila Kunis's Engagement Ring, Graded: The Tiffany Setting Question Every Blog Gets Wrong

By Daniel Carter, Gemologist | Driona Jewels | July 2, 2026

Mila Kunis's engagement ring is a round brilliant cut diamond weighing an estimated 5 carats, set in platinum with a thin, semi-pave band. Ashton Kutcher proposed with it in 2014, and current estimates from Hello! Magazine put its value between $250,000 and $315,000. Here's the part almost every other blog gets wrong: there is no confirmed source proving Tiffany & Co. actually made this ring. What people are describing is a Tiffany setting, a six-prong mounting style that Tiffany invented in 1886 and that any jeweler can legally use today. That distinction gets lost constantly, and it is worth untangling.

What Does Mila Kunis's Engagement Ring Actually Look Like?

The design is restrained on purpose. A single round brilliant diamond sits high on a thin platinum band, with small pave diamonds set along the shank for extra light without pulling attention from the center stone. No halo, no side stones, no ornate metalwork. When you are working with a diamond this size, you do not need any of that. The cut alone does the work.

I will be honest about something most jewelry content will not say out loud: round brilliant cuts get recommended constantly because they are the easiest stone to sell, not necessarily because they are the most interesting choice. But on a 5-carat stone, round brilliant genuinely earns its reputation. It is cut specifically to maximize light return, and at that scale, the sparkle is dramatic rather than just pretty. Platinum was the right call too. It is denser than white gold, it holds prongs more securely over decades, and it will not need periodic rhodium replating the way white gold does.

Is Mila Kunis's Ring Really a Tiffany? Here's What the Record Actually Shows

This is where I have to push back on almost everything you will read about this ring. Some outlets flatly call it a "Tiffany diamond ring." Others claim Ashton Kutcher designed it himself with an unnamed jeweler. One competitor writeup hedges and simply lists the designer as "custom, undisclosed." None of them explain why the story keeps shifting, and none of them cite an actual primary source.

Here is the gemology behind the confusion. In 1886, Charles Lewis Tiffany introduced what Tiffany & Co. itself calls the Tiffany setting, a six-prong mount that raises a round diamond above the band instead of hiding it in a closed bezel. It was revolutionary at the time and won awards, but it was never trademarked as a shape you need Tiffany's permission to use. Today, "Tiffany setting" is industry shorthand for any six-prong solitaire mount, made by any jeweler, anywhere.

So when a source calls Mila's ring "a Tiffany diamond ring," they may simply be describing the setting style, not the retailer. And when another source claims Kutcher designed it personally, that is also unverified: no interview, no receipt, no statement from either of them has ever confirmed who actually made the piece. The honest answer is that we do not know, and anyone stating it with confidence is guessing.

How Many Carats Is Mila Kunis's Engagement Ring, Really?

Public estimates land between 5 and 6 carats, based on gemologists comparing the stone's visible proportions against Ashton Kutcher's hand in known photos. For context, per the ET Online celebrity ring roundup, the average engagement ring diamond sold in the United States is closer to 1 to 1.5 carats, so this is roughly three to five times the size most buyers will ever see in person.

Carat weight is only one piece of the grading picture, and it is the piece that gets the most attention for the least reason. The GIA grading system weighs cut, color, and clarity alongside carat, and any of those, which we cannot verify from photos alone, would push the price up or down by tens of thousands of dollars on a stone this size. A 5-carat round brilliant with excellent cut, high color, and high clarity from a graded source can retail anywhere from $150,000 to $400,000, which is exactly why the $250,000 estimate sits comfortably in the middle of that range.

Why Does Mila Kunis Wear a $90 Etsy Band Instead of Her $250K Ring?

This is the detail that actually made this ring famous, more than the size or the setting. Per Stylist and Marie Claire UK, Mila Kunis keeps the real ring in a safety deposit box because she is genuinely afraid of losing it or having it stolen. Day to day, she wears a simple platinum wedding band she and Kutcher bought on Etsy for about $90.

I do not think this is a quirky celebrity anecdote. I think it is a rational insurance decision most people never think through. A ring that expensive needs a separate insurance rider beyond a standard homeowner's or renter's policy, and wearing it daily is exactly how six-figure stones get chipped, lost, or targeted for theft. Mila Kunis basically modeled good practice: insure the real piece, store it securely, and wear something replaceable for daily life.

How Does Mila's Ring Compare to Other Celebrity Solitaires?

Mila's ring sits at the understated end of celebrity engagement rings, closer to a quiet luxury philosophy than a statement piece, a theme we have also seen in Emily Blunt's Edwardian-style ring. Here is how it stacks up against a few others we have graded:

What separates Mila's ring from something like Kim Kardashian's is restraint. A 5-carat round brilliant in a plain platinum setting is not trying to be the biggest ring in the room. It is trying to be a genuinely well-made ring, and on that measure, it succeeds.

Can You Recreate Mila Kunis's Ring Style on a Budget?

Yes, and this is where the math gets interesting. The design itself, a round brilliant solitaire with a thin band and semi-pave detailing, does not require a six-figure budget. It requires a lab-grown diamond or moissanite in the same shape and setting style. Lab-grown diamonds run 30 to 50 percent less than mined stones of equal size and grade, and moissanite runs another 10 to 20 percent below that, which is exactly the kind of budget flexibility we walked through in our lab-grown recreation of Chrissy Teigen's cushion cut.

Closest Match

Round Diamond Solitaire Ring With Triple Pave Band

The pave-lined band is the closest visual match to Mila's semi-pave shank, in a lab-grown round brilliant.

From $366.96 Shop Now

Cleanest Minimal Take

Round Cut Solitaire Engagement Ring in Solid Gold

A plain solitaire that mirrors Mila's "let the diamond do the talking" philosophy.

From $433.39 Shop Now

More Visual Scale

2ct Round Cut Solitaire Engagement Ring & Eternity Band

If you want more presence on the hand without chasing 5 carats, this is the step up.

From $606.54 Shop Now

Every one of these should carry IGI certification so you know exactly what you are buying: cut, color, clarity, and carat, on paper, from an independent lab, not just a seller's word.

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